# Answer to Question #1358 in Mechanics | Relativity for Jon ALlen

Question #1358

Two balls, each with a mass of 0.764 kg,

exert a gravitational force of 9.00 × 10−11 N

on each other.

How far apart are the balls? The value

of the universal gravitational constant is

6.673 × 10−11 Nm2/kg2.

Answer in units of m.

exert a gravitational force of 9.00 × 10−11 N

on each other.

How far apart are the balls? The value

of the universal gravitational constant is

6.673 × 10−11 Nm2/kg2.

Answer in units of m.

Expert's answer

According the law of gravitation attraction:

F = G M

Thus

R = √(GM

F = G M

_{1}M_{2}/R2Thus

R = √(GM

_{1}M_{2}/ F) = √(6.673 × 10−11 * 0.7642/9.00 × 10−11) = 0.66 m
## Comments

## Leave a comment